Nelson Fausto of the University of Washington School of Medicine has crossed this hurdle using a human fetal hepatocyte culture system that was previously developed in his lab.

华盛顿大学医学院Nelson Fausto首次在实验室利用人类胎儿肝细胞培养系统突破这些障碍。

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Giffords has a service dog -- Nelson, a golden lab -- with her at all times.

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